Should “write”, “writes”, “wrote”, “written” count as four words or one?

比如“write”一词，有该词的原形的“write”、第三人称单数的“writes”、过去式的“wrote”以及过去分词的“written”。 是把它们算为4个单词呢，还是算为1个单词？

youdao

Read the text and write the past tense of verbs.

读课文，写出下列动词的过去式。

youdao

Read the text and write the past tense of verbs.

读课文，写出下列动词的过去式。

youdao